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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...delegate to acquire an already allocated cell, in lieu of allocating a new one.
That's determined by the exclamation mark after AnyObject:
AnyObject!
So, first thing to consider is, what is an "Implicitly Unwrapped Optional"?
The Swift Programming Language tells us:
Sometimes it is cle...
CSS customized scroll bar in div
How can I customize a scroll bar via CSS (Cascading Style Sheets) for one div and not the whole page?
18 Answers
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Routing with Multiple Parameters using ASP.NET MVC
...ng ASP.NET MVC. While designing our API, we decided to use calls like the one below for the user to request information from the API in XML format:
...
What's the fastest way to merge/join data.frames in R?
...ds d1 and d2 from the workspace into sqlite's main database clobbering the ones that were there with the indexes. As a result it does a join with no indexes. If you wanted to make use of the versions of d1 and d2 that were in sqlite's main database you would have to refer to them as main.d1 and ma...
Add disabled attribute to input element using Javascript
...hich do not exist in html (such as window.location). All other attributes (ones you can see in the html) can and should continue to be manipulated with the .attr() method.
Or in other words:
".prop = non-document stuff"
".attr" = document stuff
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May we all learn a lesson here about API sta...
Sequelize, convert entity to plain object
...tive functionality provided by sequleize, in my case when i send more than one row in socket, stack overflow error happened.
– Ashish Kadam
Mar 6 '19 at 6:06
2
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'pip' is not recognized as an internal or external command
...ly don't see how this deserved a seperate answer a year after the selected one.
– fr1tz
Jan 8 '16 at 0:02
3
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What's the reason I can't create generic array types in Java?
...'s arrays (unlike generics) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T is at runtime, you can't create the array.
sha...
If I revoke an existing distribution certificate, will it mess up anything with existing apps?
...as the key to sign the app, they finally came back and said, "Just get it done!". So I am wondering how to proceed. If I go into the provisioning portal, and revoke the dist certificate, and then re-assign one, will I then be able to sign the app and upload it without problem?
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How to check for valid email address? [duplicate]
...ed their street address) is usually enough. Something like: it has exactly one @ sign, and at least one . in the part after the @:
[^@]+@[^@]+\.[^@]+
You'd probably also want to disallow whitespace -- there are probably valid email addresses with whitespace in them, but I've never seen one, so th...